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Documentation > GRSmart User Manual/ Introduction Copy URL

Introduction

GRSmart is a debugging tool for GR551x BLE Dongle (hereinafter referred to as Dongle) on PCs.

Supported by GRSmart, a Dongle can:

  • Start advertising as a slave, or
  • Scan and connect to other devices as a master.

When Dongles are connected, GRSmart can test and debug the Bluetooth Low Energy (Bluetooth LE) characteristics of other Bluetooth devices.

Note:

GR551x BLE Dongle refers to the GR5515 Starter Kit Board (GR5515 SK Board) programmed with GRSmart firmware.

Main features of GRSmart:

  • Dongle as a slave:
    • Start legacy advertising, extended advertising, and periodic advertising.
    • Start up to five advertisements simultaneously.
  • Dongle as a master:
    • Scan advertisements.
    • Connect to or disconnect from other devices, and support multiple connections between two devices.
    • Synchronize periodic advertising.
    • Manage whitelists of devices, lists of bonded devices, lists of periodic advertisements, and lists of resolvable private addresses (RPAs).
    • View advertising data, scan response data, and periodic advertising data.
  • Support GATT-related operations.
    • Access the GATT attribute tables, which can be viewed in category mode or in simple mode.
    • Export the attribute tables in .csv files.
    • Read all characteristic values in the attribute tables with one click.
    • Turn on/off notifications/indications.
    • Support three pairing methods: Just Works, Passkey Entry, and Numeric Comparison.
    • Support maximum transmission unit (MTU) negotiations.
    • Discover services, characteristics, and attributes.
    • Read or write GATT characteristic values and descriptors.
  • Support GAP-related operations.
    • Update connection parameters, physical layer (PHY) parameters, and parameters for data transmission.
    • Obtain information about the peer devices, including the supported versions and characteristics, PHY settings for connection, and channel maps.
    • Set radio frequency (RF) transmission power.
  • Support L2CAP-related operations.
    • Create connection-oriented channels (COCs). More than one COC can be created.
    • Transmit and receive data through COCs.
    • Manage credits.
    • Manage and configure parameters related to scanning, connection, security, and L2CAP in a unified manner.
    • View and export Tool logs and Dongle logs.
    • Obtain RPAs.
    • Calibrate RF offsets.

Figure 1 shows the Graphical User Interface (GUI) of GRSmart.

Figure 1 GRSmart GUI

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